11143540165 has 16 divisors (see below), whose sum is σ = 13578566400. Its totient is φ = 8777419200.

The previous prime is 11143540159. The next prime is 11143540169. The reversal of 11143540165 is 56104534111.

11143540165 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-11143540165 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11143540169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 780511 + ... + 794659.

It is an arithmetic number, because the mean of its divisors is an integer number (848660400).

Almost surely, 2^11143540165 is an apocalyptic number.

It is an amenable number.

11143540165 is a deficient number, since it is larger than the sum of its proper divisors (2435026235).

11143540165 is a wasteful number, since it uses less digits than its factorization.

11143540165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16572.

The product of its (nonzero) digits is 7200, while the sum is 31.

The spelling of 11143540165 in words is "eleven billion, one hundred forty-three million, five hundred forty thousand, one hundred sixty-five".